Replace USES=libtool:oldver with USES=libtool or USES=libtool:keepla in
the 32 ports that still use it. Bump PORTREVISION on their dependent
ports except the ones that depend on these:
audio/libogg
audio/libvorbis
devel/pcre
ftp/curl
graphics/jpeg
graphics/libart_lgpl
graphics/tiff
textproc/expat2
textproc/libxslt
In these cases the same trick as in the recent gettext update is used.

- update audio/lame to 3.98.4
- use ?= for the portrevision of a master port to make it possible to
change it in a slave port which depends upon lame
- bump portrevisions of ports which depend upon lame
- done via a semi-automated way (manual review and fixup)
- I tried to take care to not bump ports which only depend optionaly on
lame (with a default of no dependency)

Bump portrevision due to upgrade of devel/gettext.
The affected ports are the ones with gettext as a run-dependency
according to ports/INDEX-7 (5007 of them) and the ones with USE_GETTEXT
in Makefile (29 of them).
PR: ports/124340
Submitted by: edwin@
Approved by: portmgr (pav)